一、題目描述

輸入一個(gè)鏈表，輸出該鏈表中倒數(shù)第k個(gè)結(jié)點(diǎn)。

二、代碼實(shí)現(xiàn)

# -*- coding:utf-8 -*-
# class ListNode:
#     def __init__(self, x):
#         self.val = x
#         self.next = None

class Solution:
    def FindKthToTail(self, head, k):
        # write code here
        if head == None: return None
        p = head
        q = head
        while k-1:
            if p.next == None: return None
            p = p.next
            k = k-1
        while p.next:
            p = p.next
            q = q.next
        return q